From 1fd1ea4395e520694bd9f8b1dc9e60af6442946d Mon Sep 17 00:00:00 2001
From: Denis Vlasenko
Date: Fri, 10 Apr 2009 12:03:20 +0000
Subject: hush: tighten up "for" variable name check.  Add TODOs.  Disable
 redir4.right part where we differ from bash.  It is not a bug per standards. 
 Add a few tests, one is in hush-bugs section: 
 and_or_and_backgrounding.right. It will likely bite users  in real world
 usage.

---
 .../hush-bugs/and_or_and_backgrounding.right       |  4 +++
 .../hush-bugs/and_or_and_backgrounding.tests       | 31 ++++++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 shell/hush_test/hush-bugs/and_or_and_backgrounding.right
 create mode 100755 shell/hush_test/hush-bugs/and_or_and_backgrounding.tests

(limited to 'shell/hush_test/hush-bugs')

diff --git a/shell/hush_test/hush-bugs/and_or_and_backgrounding.right b/shell/hush_test/hush-bugs/and_or_and_backgrounding.right
new file mode 100644
index 0000000..90ce63e
--- /dev/null
+++ b/shell/hush_test/hush-bugs/and_or_and_backgrounding.right
@@ -0,0 +1,4 @@
+First
+Second
+Third
+Done
diff --git a/shell/hush_test/hush-bugs/and_or_and_backgrounding.tests b/shell/hush_test/hush-bugs/and_or_and_backgrounding.tests
new file mode 100755
index 0000000..05acfb8
--- /dev/null
+++ b/shell/hush_test/hush-bugs/and_or_and_backgrounding.tests
@@ -0,0 +1,31 @@
+# UNFIXED BUG: hush thinks that ; && || & have the same precedence.
+# According to this doc, && || have higher precedence than ; &.
+# See example below.
+# Precedence of ; is not a problem in practice. Precedence of & is.
+#
+#http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html
+#
+#2.9.3 Lists
+#
+#An AND-OR list is a sequence of one or more pipelines separated by
+#the operators "&&" and "||" .
+#
+#A list is a sequence of one or more AND-OR lists separated by the operators
+#';' and '&' and optionally terminated by ';', '&', or <newline>.
+#
+#The operators "&&" and "||" shall have equal precedence and shall be
+#evaluated with left associativity. For example, both of the following
+#commands write solely bar to standard output:
+#
+#    false && echo foo || echo bar
+#    true || echo foo && echo bar
+#
+#A ';' or <newline> terminator shall cause the preceding AND-OR list
+#to be executed sequentially; an '&' shall cause asynchronous execution
+#of the preceding AND-OR list.
+
+echo First && sleep 0.2 && echo Third &
+sleep 0.1
+echo Second
+wait
+echo Done
-- 
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